Xu Yangtao

Microstructures Comparison of Stellite 6 Alloy by Self-Propagating High-Temperature Synthesis and Cast HS111 Alloy

Abstract The microstructures of as-SHSed Stellite 6 and as-cast HS111 were investigated by SEM, XRD and EPMA. It was shown that there is significant similarity in the microstructures of as-SHSed Stellite 6 and as-cast HS111. But carbides of continuous cast HS111 alloy can form single and uniform carbides phase.

Study on Fretting Friction Coefficient between NiTi Shape Memory Alloy and Human Bone in Hank's Solution

Abstract The fretting friction coefficient between nickel titanium shape memory alloy (NiTi SMA) and hum Hanks solution by SRV multi-functional test system. The results show that the friction coefficient between pairs decrease with the lubrication effect coefficient in the acidic and alkaline media is greater than that in the normal situation. The friction coefficient between the bone and NiTi SMA tends to be stable with the increase of the amplitude in the four media. Because Hanks solution restrains the forming of worn scrap and its further development, the maximum wear depth and width of worn scrap and the volume of worn spot decrease to some extent compared to that in normal situations.